Manufacturing company with a recent SEC Form D offering.
Manufacturing company headquartered in SAN LEANDRO, CALIFORNIA. Filed SEC Form D on 20260918 for a $19.4M Regulation D offering.
Technology📍 SAN LEANDRO, CALIFORNIA
Current Valuation
Private
PRIVATE
IPO Outlookprivate
Is SirenOpt going public?
No. SirenOpt is private and has not filed to go public. There is no S-1 on file.
What is SirenOpt's valuation in 2026?
No confirmed valuation is on record for SirenOpt. The roster shows funding and investors where they are public; it does not estimate a mark.
Has SirenOpt filed an S-1?
No public S-1 is on file for SirenOpt.
How much has SirenOpt raised?
SirenOpt has raised $19.43M in total, most recently a Form D filing of $19.43M in 20260918.
Is SirenOpt publicly traded — can you buy SirenOpt stock?
No. SirenOpt is a private company — its shares are not listed on any exchange and there is no ticker. The routes to exposure are pre-IPO secondary marketplaces and funds (accredited investors), employee tender offers when the company runs one, and public companies with read-through exposure. QuantLogix maps every route it can verify for SirenOpt on its Pre-IPO Access Desk.
Answers are derived from the roster record shown on this page — filing status, last round and confirmed marks. Where the record is silent, the answer says so rather than guessing.
Company Profile
HQ
SAN LEANDRO, CALIFORNIA
Total Raised
$19.43M
Growth
Filed SEC Form D on 20260918 for $19.4M Regulation D offering
Last Round
Form D filing — $19.43M (20260918)
IPO Status
private
Fundraising Status
Form D filing · $19.43M
privateTotal raised $19.43M
Latest Funding Round
Round
Amount
Date
Lead Investor
Post-Money
Form D filing
$19.43M
20260918
—
—
Talent Signal
Hiring trend
▲ Hiring uptrend
+180% vs 2026-09
Open roles
14
via greenhouse
Product-build share
79%
engineering, research, product, design
Trajectory
expanding
heavy product build — 79% of open roles are product-building functions (engineering/research/product) — 6 of 14 open roles are engineering.
No tracked executive churn; open roles trending up.
Open roles by month
Open roles by function
■ product-building ■ go-to-market / G&A
Metrology Applications EngineerMetrology Data ScientistSenior Product ManagerSenior/Staff Scientist - Algorithms & Data ProductsSenior/Staff Software Engineer - C++Senior/Staff Systems Engineer
Counted from SirenOpt's live job board as of 2026-10-24; role functions classified from posting titles. Open-role counts are an activity signal, not headcount. Refreshed monthly.
TechnologyForm DRecently Funded
Private-company numbers are not real-time. Reflects publicly disclosed valuations from press releases, news reports, and tender offers as of recent date. Refreshed quarterly.